Officials say a Ukrainian drone has struck an industrial plant deep inside Russia, injuring several people and causing a fire.

The overnight attack was one of the largest on Ukraine and included strikes in the western part of the country, which is hit less often.

The White House cited Pentagon concerns that some American arms stockpiles were dwindling too low. Among the affected weapons were air defense systems, bombs, missiles and artillery rounds.

Ukrainian President Volodymyr Zelensky met US President Donald Trump at last month's Nato summit The US has halted some weapons shipments to Kyiv, the White House has said, as Russia's war against Ukraine has intensified.